Characteristics of mud cake in bored cast-in-place piles within granite weathered strata and application of pile side post-grouting

MO Jijun; LIU Xiaoming; HU Boyin; WEI Qinghua

doi:10.20265/j.cnki.issn.1007-2993.2025-0216

Volume 40 Issue 4

Aug. 2026

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MO Jijun, LIU Xiaoming, HU Boyin, WEI Qinghua. Characteristics of mud cake in bored cast-in-place piles within granite weathered strata and application of pile side post-grouting[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(4): 504-512. doi: 10.20265/j.cnki.issn.1007-2993.2025-0216

Citation:

MO Jijun, LIU Xiaoming, HU Boyin, WEI Qinghua. Characteristics of mud cake in bored cast-in-place piles within granite weathered strata and application of pile side post-grouting[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(4): 504-512. doi: 10.20265/j.cnki.issn.1007-2993.2025-0216

Citation:

MO Jijun, LIU Xiaoming, HU Boyin, WEI Qinghua. Characteristics of mud cake in bored cast-in-place piles within granite weathered strata and application of pile side post-grouting[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(4): 504-512. doi: 10.20265/j.cnki.issn.1007-2993.2025-0216

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Characteristics of mud cake in bored cast-in-place piles within granite weathered strata and application of pile side post-grouting

doi: 10.20265/j.cnki.issn.1007-2993.2025-0216

1.
Wuzhou Architectural Design Institute, Wuzhou 543002, Guangxi, China
2.
The Guangxi Zhuang Autonomous Region Geological Environment Monitoring Statoin, Nanning 530201, Guangxi, China

Received Date: 2025-05-16
Accepted Date: 2025-08-25
Rev Recd Date: 2025-06-20
Publish Date: 2026-08-08

Abstract

Abstract

Granite weathered strata are characterized by high sand content, tight clay cementation, and easy softening and disintegration upon contact with water. Bored cast-in-place piles are generally constructed with slurry-supported walls, under which a mud cake will form around the pile shaft. By collecting two engineering cases where bored cast-in-place piles failed to meet bearing capacity requirements, combined with test data and field excavation verification, the characteristics of the mud cake of bored cast-in-place piles in granite weathered strata were summarized. The study shows that the shaft mud cake of bored cast-in-place piles in granite weathered strata has a relativety large thickness and properties similar to soft plastic clay. The shaft resistance is manifested as the resistance between the pile concrete and the mud cake,which exerts a significant impact on the bearing capacity of single piles. Engineering practice demonstrates that pile side post-grouting treatment effectively eliminates the adverse effects of mud cake on side resistance. However, this treatment shows limited reinforcement effect on surrounding soils. After treatment, the pile side resistance can be determined based on the inherent properties of the granite weathered strara itself.
- granite weathered strata,
- mud cake,
- pile ultimate bearing capacity,
- pile ultimate shaft resistance,
- pile side post- grouting

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References(23)

References

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Characteristics of mud cake in bored cast-in-place piles within granite weathered strata and application of pile side post-grouting

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Characteristics of mud cake in bored cast-in-place piles within granite weathered strata and application of pile side post-grouting

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